// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_AUDIO_MANAGER_THREAD_H_
#define CONTENT_BROWSER_AUDIO_MANAGER_THREAD_H_

#include "base/memory/ref_counted.h"
#include "base/threading/thread.h"
#include "content/common/content_export.h"

namespace content {

// This class encapulates the logic for the thread and task runners that the
// AudioManager and related classes run on. audio_task_runner and
// worker_task_runner should be called on the same thread as the
// AudioManagerThread was constructed on.
class CONTENT_EXPORT AudioManagerThread {
public:
    // Constructs and starts a thread. On all platforms except for Mac, the
    // started thread becomes the audio task runner. However, on Mac, the task
    // runner this object is constructed on will become the audio thread and the
    // thread is only used for high complexity tasks which can't be run on the
    // main thread (typically the UI thread).
    AudioManagerThread();
    ~AudioManagerThread();

    scoped_refptr<base::SingleThreadTaskRunner> task_runner() const
    {
        return task_runner_;
    };

    scoped_refptr<base::SingleThreadTaskRunner> worker_task_runner() const
    {
        return thread_.task_runner();
    }

private:
    base::Thread thread_;

    // Task runner to run audio control calls on.
    scoped_refptr<base::SingleThreadTaskRunner> task_runner_;

    DISALLOW_COPY_AND_ASSIGN(AudioManagerThread);
};

} // namespace content

#endif // CONTENT_BROWSER_AUDIO_MANAGER_THREAD_H_
